AMPH vs INIS vs RDY Stock Comparison

Amphastar Pharmaceuticals, Radnostix and Dr Reddys Laboratories Prices as of Oct 26, 2026 Peers: Industry group
INIS Radnostix Inc
$0.05 -16.7% 1M 0.0% 1Y
Market cap
$20.11M
P/E
–
Revenue (TTM)
$11.23M
Div. yield
–
Generic Drugs Healthcare
1 win

Head to Head

11 decided of 12

Amphastar Pharmaceuticals leads on 8 of the 12 questions below (Amphastar Pharmaceuticals 8, Dr Reddys Laboratories 2, Radnostix 1). Which ones matter depends on what you are buying for; a cheap multiple and slow growth often come together.

QuestionAMPHINISRDYLeader
Larger companyMarket capitalisation $1.12B $20.11M $11.46B RDY
Cheaper on earningsLower P/E, profitable companies only 14.2x -7.0x 31.5x AMPH
Cheaper on forward earningsLower price / next fiscal year consensus EPS 8.2x — 28.7x AMPH
Faster revenue growthRevenue growth, trailing twelve months +1.0% -23.7% -10.5% AMPH
More profitableNet margin, trailing twelve months 10.8% -25.5% 10.2% AMPH
Better return on capitalReturn on invested capital 6.4% — 5.6% AMPH
Less leveragedLower net debt / EBITDA 1.8x -0.5x 1.2x INIS
Higher dividend yieldTrailing dividend yield 0.00% 0.00% 0.00% –
Better 1-year returnPrice return, last 12 months +3.9% 0.0% -5.6% AMPH
Better 5-year returnAnnualised price return, 5 years +6.8%/yr -13.0%/yr +2.3%/yr AMPH
Less volatileAnnualised volatility, 1 year 54.3% 169.2% 27.6% RDY
Higher overall scoreMean of the five percentile scores vs peers 73/100 51/100 58/100 AMPH

Percentile Scorecard

AMPHINISRDY

Each axis is the mean percentile of its metrics against the company's industry group. 100 is the best in the group, 50 the middle.

Scores by Axis

AxisAMPHINISRDY
Valuation 99 #8 of 626 83 #110 of 626 91 #57 of 626
Growth 43 #347 of 604 2 #591 of 604 10 #546 of 604
Profitability 87 #72 of 555 72 #159 of 555 83 #95 of 555
Financial Health 37 #412 of 658 16 #553 of 658 44 #371 of 658
Shareholder Returns 99 #4 of 368 84 #61 of 368 64 #135 of 368
Overall 73 51 58
  • AMPH ranked among 673 companies in Pharmaceuticals and Biotechnology
  • INIS ranked among 673 companies in Pharmaceuticals and Biotechnology
  • RDY ranked among 673 companies in Pharmaceuticals and Biotechnology

Price Performance

Price return, split-adjusted, before dividends. Click a name to hide or show it.

Returns

PeriodAMPHINISRDYSPY
1 month -2.5%-16.7%+12.2% -0.8%
3 months +32.8%-28.6%+16.9% +3.5%
6 months +17.6%-37.5%-1.5% +7.0%
Year to date -4.9%-16.7%-2.0% +12.2%
1 year +3.9%0.0%-5.6% +13.0%
3 years -42.9%0.0%+5.8% +86.3%
3 years, per year -17.1%0.0%+1.9% +23.1%
5 years +38.7%-50.0%+12.2% +68.6%
5 years, per year +6.8%-13.0%+2.3% +11.0%
10 years +40.1%-37.5%+41.7% +258.0%
10 years, per year +3.4%-4.6%+3.5% +13.6%

Risk

MeasureAMPHINISRDYSPY
Volatility, 1Y 54.3%169.2%27.6% 12.7%
Downside volatility, 1Y 66.4%264.0%30.5% 12.7%
Beta vs S&P 500, 1Y 0.582.050.28 1.00
Return / volatility, 1Y 0.070.00-0.20 1.02
Max drawdown, 5Y -74.0%-70.0%-32.3% -25.4%
From 52-week high -13.4%-54.5%-10.5% -1.8%
52-week high $29.40$0.11$15.38 $779.14
52-week low $16.87$0.04$11.40 $631.97

Valuation History

Weekly multiples on trailing twelve-month fundamentals. Negative or extreme readings (a loss year, a collapsed denominator) are left out so the chart stays readable.

MultipleAMPHINISRDY
P/E now vs peer median 14.2xmedian 17.1x -9.2xmedian 17.1x 31.5xmedian 17.1x
P/S now vs peer median 1.5xmedian 8.8x 2.4xmedian 8.8x 3.2xmedian 8.8x
EV/EBITDA now vs peer median 8.0xmedian 17.1x -11.0xmedian 17.1x 22.9xmedian 17.1x
P/FCF now vs peer median 7.1xmedian 18.0x -28.6xmedian 18.0x 822.9xmedian 18.0x
P/B now vs peer median 1.4xmedian 2.1x 14.0xmedian 2.1x 2.8xmedian 2.1x
PEG now vs peer median -5.53median 0.31 0.25median 0.31 -1.48median 0.31

Financial History

Reported figures by fiscal period, placed on the calendar year (or quarter) each period ended in, so companies with different fiscal years line up.

Trailing twelve monthsAMPHINISRDY
Revenue $730.02M $11.23M $3.56B
Gross profit $348.11M $6.04M $1.76B
Operating income $114.29M -$2.90M $347.04M
Net income $78.55M -$2.86M $299.19M
Free cash flow $152.89M -$925.24K $13.96M
R&D $94.57M $490.38K $244.48M
EPS (diluted) $1.78 $-0.01 $0.44
Cash & equivalents $223.61M $1.20M $138.41M
Total debt $612.05M $8.26M $752.59M
Shares (diluted) 44.23M 529.12M 833.33M
Enterprise value -$25.12M $14.22M $10.80B

All Metrics

58 metrics · best in bold

Bold marks the best reading: the lowest positive value for multiples, leverage and payout, the highest for everything else. The bar under each value is its percentile against that company's own peers. Hover a value for its rank and the peer median.

Valuation

12 metrics
MetricAMPHINISRDY
P/E 14.2x -9.2x 31.5x
P/FCF 7.1x -28.6x 822.9x
P/Operating cash flow 5.9x -70.3x 33.8x
P/S 1.5x 2.4x 3.2x
P/B 1.4x 14.0x 2.8x
P/Tangible book 1.5x -21.4x 3.9x
EV/EBITDA 8.0x -11.0x 22.9x
EV/EBIT 12.3x -9.5x 34.9x
EV/Revenue 1.9x 2.5x 3.4x
EV/FCF 9.2x -29.8x 866.9x
EV/Operating cash flow 7.6x -73.3x 35.6x
PEG (3Y EPS CAGR) -5.53 0.25 -1.48

Growth

14 metrics
MetricAMPHINISRDY
Revenue growth (1Y) 1.0% -23.7% -10.5%
Revenue CAGR (3Y) 10.5% -2.6% 3.2%
Gross profit growth (1Y) -3.4% -32.4% -21.5%
Gross profit CAGR (3Y) 8.0% -4.0% -2.3%
Operating income growth (1Y) -37.1% -1,245% -58.2%
Operating income CAGR (3Y) -4.5% -50.5% -24.1%
Net income growth (1Y) -41.7% -2,437% -55.9%
Net income CAGR (3Y) -8.3% -38.0% -21.5%
EPS growth (1Y) -36.5% -2,429% -54.1%
EPS CAGR (3Y) -2.6% -37.0% -21.3%
Operating cash flow growth (1Y) 15.6% -157.0% -39.6%
Operating cash flow CAGR (3Y) 12.1% -41.4% -27.1%
Free cash flow growth (1Y) 36.3% -2,469% -98.4%
Free cash flow CAGR (3Y) 15.0% -69.5% -73.6%

Profitability

14 metrics
MetricAMPHINISRDY
Gross margin 47.7% 53.8% 49.5%
EBITDA margin 23.9% -22.3% 14.9%
Operating margin 15.7% -25.8% 9.7%
Pretax margin 14.0% -28.3% 10.7%
Net margin 10.8% -25.5% 10.2%
FCF margin 20.9% -8.2% 0.4%
Operating cash flow margin 25.3% -3.4% 9.5%
Return on equity 10.2% -140.0% 7.4%
Return on assets 4.6% -18.8% 5.0%
Return on invested capital 6.4% – 5.6%
Return on capital employed 8.0% -22.8% 7.9%
Asset turnover 0.4x 0.7x 0.6x
Cash conversion (OCF / net income) 2.4x 0.1x 1.1x
Stock comp / revenue 4.0% 3.7% 0.1%

Financial Health

11 metrics
MetricAMPHINISRDY
Debt / assets 35.1% 14.0% 12.6%
Debt / equity 0.8x 1.2x 0.2x
Net debt / EBITDA 1.8x -0.5x 1.2x
Debt / FCF 4.0x -2.5x 53.9x
Liabilities / assets 55.9% 88.6% 32.2%
Equity / assets 44.1% 11.4% 67.8%
Interest coverage 4.4x -8.5x 7.2x
Current ratio 2.4x 0.8x 1.9x
Quick ratio 1.7x 0.6x 0.7x
Cash ratio 1.1x 0.3x 0.1x
Altman Z-score 2.12 -9.85 5.54

Shareholder Returns

7 metrics
MetricAMPHINISRDY
Dividend yield – – 0.6%
Net buyback yield 9.0% -0.1% -0.1%
Shareholder yield 9.0% -0.1% 0.5%
Payout ratio (earnings) – – –
Payout ratio (FCF) – – –
Dividend growth (1Y) – – –
Dividend CAGR (3Y) – – –

Analyst Estimates

Solid lines are reported fiscal-year results; dashed lines are the consensus for the years ahead. Hover a year for the analysts' high and low, and how each result compared with its estimate.

ConsensusAMPHINISRDY
Forward P/E 8.2xFY2026 – 28.7xFY2026
EPS, next fiscal year $3.09FY2026 – $0.48FY2026
EPS growth, next FY -4.9%FY2026 – -11.1%FY2026
EPS growth, the year after +9.4% – +20.8%
Revenue, next fiscal year $790.23MFY2026 – $3.82BFY2026
Revenue growth, next FY +9.8%FY2026 – +8.7%FY2026
Revenue growth, the year after -5.4% – +3.7%

Institutional Ownership

13F filings, quarter ended Jun 30, 2026
HoldersAMPHINISRDY
Held by institutions 64.8% – 15.1%
Institutions holding 209 – 238
Change in shares held, QoQ -11.7% – +4.3%
Institutions buying 96 – 107
Institutions selling 74 – 97
Buyers to sellers 1.30 – 1.10

Return Correlation

Daily returns, last 12 months

1.00 means two stocks move in lockstep, 0 that they move independently. Pairs below about 0.5 diversify each other.

AMPHINISRDY
AMPH 1.00 0.04 0.20
INIS 0.04 1.00 -0.12
RDY 0.20 -0.12 1.00

Add a Peer

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Frequently Asked Questions

Which is bigger, AMPH, INIS and RDY?

Dr Reddys Laboratories (RDY) is the largest by market capitalisation: Amphastar Pharmaceuticals (AMPH) $1.12B, Radnostix (INIS) $20.11M, Dr Reddys Laboratories (RDY) $11.46B.

Which stock is cheaper, AMPH, INIS and RDY?

Amphastar Pharmaceuticals (AMPH) trades on the lowest price-to-earnings ratio (Amphastar Pharmaceuticals (AMPH) 14.2x, Radnostix (INIS) -7.0x, Dr Reddys Laboratories (RDY) 31.5x). On next year's consensus earnings, Amphastar Pharmaceuticals (AMPH) is cheapest (Amphastar Pharmaceuticals (AMPH) 8.2x, Dr Reddys Laboratories (RDY) 28.7x). A lower multiple can reflect slower expected growth, so read it next to the growth figures.

Which company is growing faster?

Amphastar Pharmaceuticals (AMPH) grew revenue fastest over the trailing twelve months: Amphastar Pharmaceuticals (AMPH) +1.0%, Radnostix (INIS) -23.7%, Dr Reddys Laboratories (RDY) -10.5%.

Which company is more profitable?

Amphastar Pharmaceuticals (AMPH) has the highest net margin (Amphastar Pharmaceuticals (AMPH) 10.8%, Radnostix (INIS) -25.5%, Dr Reddys Laboratories (RDY) 10.2%). On return on invested capital, Amphastar Pharmaceuticals (AMPH) leads (Amphastar Pharmaceuticals (AMPH) 6.4%, Dr Reddys Laboratories (RDY) 5.6%).

Which stock has performed better?

Over the past year Amphastar Pharmaceuticals (AMPH) returned the most: Amphastar Pharmaceuticals (AMPH) +3.9%, Radnostix (INIS) 0.0%, Dr Reddys Laboratories (RDY) -5.6%. Over five years, Amphastar Pharmaceuticals (AMPH) compounded fastest (Amphastar Pharmaceuticals (AMPH) +6.8%/yr, Radnostix (INIS) -13.0%/yr, Dr Reddys Laboratories (RDY) +2.3%/yr). Returns are price only, before dividends.

Which stock is riskier?

By one-year price volatility, Dr Reddys Laboratories (RDY) has been the steadiest (Amphastar Pharmaceuticals (AMPH) 54.3%, Radnostix (INIS) 169.2%, Dr Reddys Laboratories (RDY) 27.6%). Volatility measures how widely the price swings, not the risk of the business.

Which is the better stock, AMPH, INIS and RDY?

There is no single answer; it depends on what you are buying for. On the 12 head-to-head measures on this page, Amphastar Pharmaceuticals (AMPH) leads on 8. Business Quant does not give investment advice; use the comparison as a starting point for your own research.

Data from SEC filings, exchange prices and consensus estimates, via Business Quant. Percentile scores compare each company with its own peer group, so two companies' scores are each relative to different peers unless you rank against the whole market. Price returns exclude dividends. Nothing on this page is investment advice.